Woodward GCP-20 Series User Manual

Manual 37128A GCP-20 Series - Genset Control
Page 104/190 © Woodward
Synchronization (With Synchronous Generators Only)
CAUTION
Please consider that units with a software older than V1.0700 do not have an internal rotating field
monitoring.
Units below V1.0700 assume always a clockwise phase rotation direction of all three voltage systems,
which are measured.
A rotating field monitoring must be provided by the customer in order to avoid a CB closure with a
counter-clockwise rotating field.
Parameter 110
Synchronize
df max 0.00Hz
Max. perm. differential frequency for synchronization (pos. slip) 0.02 to 0.49 Hz
The prerequisite for a connect command being issued is that the differential fre-
quency is below the configured differential frequency. This value specifies the up-
per frequency (positive value corresponds to positive slip Æ generator frequency is
higher than the busbar frequency in the case of GCB synchronization; busbar fre-
quency is higher than the mains frequency in the case of MCB synchronization).
Parameter 111
Synchronize
df min -0.00Hz
Max. perm. differential frequency for synchronization (neg. slip) 0.00 to -0.49 Hz
The prerequisite for a connect command being issued is that the differential fre-
quency is above the configured differential frequency. This value specifies the
lower frequency limit (negative value corresponds to negative slip Æ generator
frequency is less than the busbar frequency in the case of GCB synchronization;
busbar frequency is lower than the mains frequency for MCB synchronization).
Parameter 112
Synchronize
dV max 00V
Max. perm. differential voltage for synchronization [1] 1 to 20 V; [4] 2 to 60 V
A connect command will only be issued when the measured voltage falls below the
configured differential voltage.
Parameter 113
Synchronize
time pul.> 0.00s
Min. pulse duration of connect relay for synchronization 0.05 to 0.26 s
The duration of the close pulse can be adjusted to the breaker (valid for synchroni-
zation and dead bus start).
Parameter 114
Closing time
GCB 000ms
Inherent delay of GCB for synchronization 40 to 300 ms
The inherent closing time of the GCB corresponds to the lead-time of the close
command. The close command will be issued independently of the differential fre-
quency at the entered time before the synchronous point.
Parameter 115
Closing time
MCB 000ms
Inherent delay of MCB for synchronization 40 to 300 ms
The inherent closing time of the MCB corresponds to the lead-time of the close
command. The close command will be issued independently of the differential fre-
quency at the entered time before the synchronous point.
Parameter 116
Automat.breaker
deblocking ON
Automatic circuit breaker deblocking ON/OFF
ON................Prior to each close pulse, a "Command: open GCB", or "Command:
open MCB" is issued for 1 second. A close signal is then enabled un-
til the breaker is closed.
OFF..............Initialization of the circuit breaker initialization on closing is per-
formed only by the close pulse. No open pulse is issued prior to the
close pulse.

Woodward GCP-20 Series Specifications

General

Brand	Woodward
Model	GCP-20 Series
Category	Control Unit
Language	English